The article presents the results of a study of the activities of heat supply organizations that get the opportunity to improve business efficiency through the introduction of digitalization technologies in the context of sustainable development goals (SDGs). Based on a preliminary analysis of the activities of heat supply organizations for a reference group of countries using district heating supply to consumers, a problem area that needs digitalization has been identified - the operation of heat networks from the source to consumers. As research materials, data on the heat supply of consumers were used, which showed new possibilities provided by digitalization for predicting the processes of operation of heat networks based on the values of the operating parameters. The results of the study are presented by a digital information system (DIS) model, for which the structure and priority digitalization technologies are determined. Along with this, classifiers of operating parameters have been developed, which, in combination with the conditions for the functioning of the DIS, provide a full-fledged application of trend and factor approaches to predicting heat supply to consumers. In terms of discussion, four areas of digitalization of HSO activities and their relationship with the achievement of the SDGs are identified. The key points that are introduced by the use of digital technologies as part of the DIS are identified. Taking into account the interdependence of the directions of HSO digitalization and the need for their joint implementation, problematic issues that must be taken into account when introducing digital technologies are characterized. The forecasting effects that can be obtained with the successful introduction of digital technologies in HSOs and further actions of the management of these organizations after the implementation of the DIS in the direction of complex digitalization of activities are determined. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.